Hook Mechanic (Physics)

Hi

I wondered if anyone could provide a few pointers on how to start creating a grappling hook(sort of) type of mechanic?

So i have a hero:
1.When i tap on screen (if its on a static object) then a joint is made.
2.The hook shoots out and once hits target, the hero is pulled towards it.
3.If user releases then the hook is killed.

Any pointers to relevant tutes, or high level points on how to approach it would be really appreciated.

Where I currently am (just for testing getting used to corona).

I have my hero sprite.
When I tap screen Im drawing a circle at that point
I am then adding a distance joint between the 2.
ade

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